WordPressの記事データをmicroCMSにPOSTする

wp_to_microcms.php

<?php
// 移行記事のxmlファイルを指定
$xml = "./foo.xml";

// microCMSの画像用CDNのURLとパス
$imgBasePath = 'https://images.microcms-assets.io/bar/';

// xmlを読み込み
$xmlData = simplexml_load_file($xml, 'SimpleXMLElement', LIBXML_NOCDATA);

$url = 'microCMSのAPIのエンドポイント';
$headers = array(
    'Content-Type: application/json',
    'X-WRITE-API-KEY: 取得したAPI-KEY'
);

foreach ($xmlData->channel->item as $entry) {

    // カテゴリの設定
    $cateArray = [];
    $categories = json_decode(json_encode($entry->category), true);

    foreach ($categories as $category) {
        if (is_array($category)) continue;

        switch($category) {
            case 'お知らせ01':
                $cateArray[] = 'topics01';
                break;
            case 'お知らせ02':
                $cateArray[] = 'topics02';
                break;
            case 'お知らせ03':
                $cateArray[] = 'topics03';
                break;
        }
    }

    // コンテンツ取得
    $contents = trim(strval($entry->children('content', true)->encoded));

    // 画像を使っている部分を正規表現で抽出
    preg_match_all('/src="https:\/\/foober\.com\/wp-content\/uploads\/(.*)(png|jpg|jpeg|gif)/i', $contents, $matches);

    // 置き換え用の配列を作成
    $pattern = [];
    $replace = [];
    foreach ($matches[0] as $key => $match) {
        $pattern[] = '/' . preg_replace('/\//', '\/', $match) . '/';
        $pathArray = explode('/', $match);
        $paths = array_reverse($pathArray);
        $replace[] = 'src="' . $imgBasePath . "{$paths[2]}_{$paths[1]}_{$paths[0]}";
    }

    // 置き換え実行
    $html_content = preg_replace($pattern, $replace, $contents);

    // 送信用のデータ作成
    $data = [
        'id' => '000' . strval($entry->children('wp', true)->post_id),
        'title' => trim(strval($entry->title)),
        'category' => array_unique($cateArray),
        'html_contents' => $html_content,
        'is_html' => true,
        'is_migration' => true
    ];

    // curlでPOSTする
    $ch = curl_init();
    curl_setopt($ch, CURLOPT_URL, $url);
    curl_setopt($ch, CURLOPT_POST, TRUE);
    curl_setopt($ch, CURLOPT_HTTPHEADER, $headers);
    curl_setopt($ch, CURLOPT_POSTFIELDS, json_encode($data));
    curl_setopt($ch, CURLOPT_RETURNTRANSFER, TRUE);
    $html = curl_exec($ch);

    // curlでエラー
    if(curl_errno($ch)){
        $CURLERR .= 'curl_errno：' . curl_errno($ch) . "\n";
        $CURLERR .= 'curl_error：' . curl_error($ch) . "\n";
        $CURLERR .= '▼curl_getinfo' . "\n";
        foreach(curl_getinfo($ch) as $key => $val){
            $CURLERR .= '■' . $key . '：' . $val . "\n";
        }
        echo nl2br($CURLERR);
    }

    curl_close($ch);

    // 結果の表示
    echo $data['id'] . ':' . $html . "\n";
}